Yea sorry, should've specified. The biggest difference I see is the lack of AF but it that so important with that distance?
also I heard the build quality is great but there's are sometimes focus ring issues
I never bother focusing my Nikkor fisheye unless I'm shooting up close & personal. Maybe that's what you're wanting to do, but AF is not a biggie for me.
I looked into that lens when I was researching fisheyes, and it was one of my top choices. I opted for the Nikkor, however, simply due to size & weight. And f/2.8 v 3.5
I bought one several months ago. I've used it a few times and so far have been happy with it. I only have one photo on my current computer, which I took of a rainbow recently. I wanted to get the full shot, so I grabbed this lens. It was still raining some, which explains the water spots.